package com.itheima.reggie.common;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;
import java.time.LocalDateTime;

/**
 * 自定义元数据对象处理器
 */
@Component
@Slf4j
public class MyMetaObjecthandler implements MetaObjectHandler {



    /**
     * 插入操作，自动填充
     * @param metaObject
     */
    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("公共字段自动填充[insert]...");
        log.info(metaObject.toString());

        //调用BaseContext来获取当前登录用户的id        //不能写在方法外因为还没开始 获取线程id获取不到
        Long id = BaseContext.getCurrentId();

        metaObject.setValue("createTime", LocalDateTime.now());
        metaObject.setValue("updateTime",LocalDateTime.now());
        /*metaObject.setValue("createUser",new Long(1));        //如何获取用户Id？  编写BaseContext类
        metaObject.setValue("updateUser",new Long(1));*/
        metaObject.setValue("createUser",id);
        metaObject.setValue("updateUser",id);
    }

    /**
     * 更新操作，自动填充
     * @param metaObject
     */
    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("公共字段自动填充[update]...");
        log.info(metaObject.toString());
        Long id = BaseContext.getCurrentId();
        metaObject.setValue("updateTime",LocalDateTime.now());
        metaObject.setValue("updateUser",id);
    }
}